1. Division of Nuclear Medicine, Department of Radiology, The University of Michigan Medical School, Ann Arbor, Michigan 48109, United States
2. The Interdepartmental Program in Medicinal Chemistry, The University of Michigan, Ann Arbor, Michigan 48109, United States
3. Department
of Neurology, The University of Michigan Medical School, Ann Arbor, Michigan 48109, United States
4. Neurology Service and Geriatrics Research,
Education, and Clinical Center, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan United States